Lock-nut.



PATENTBD SEPT. 19, 1905.

New. 799,644.

T. GOSERUD.

LOCK NUT.

APPLICATION rum) JAN. 23, 1905.

Witnesses Rttomegs UNITED srAriJs PATENT ()FFICE.

WISCONSIN.

LOCK-NUT.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed January 23, 1905. Serial No. 242,396.

To all whom it may concern.-

Be it known that I, THoRwALD GosERUD, a citizen of the United States, residing at Sturgeon Bay, in the county of Door and State of Wisconsin, have invented a new and useful Lock-Nut, of which the following is a speci-. fication.

This invention relates to the nuts of bolts having means whereby they are prevented from backward rotation thereon, and has for its object to simplify and improve the construction and increase the efficiency of devices of this character.

With these and other objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by like designating characters, is illustrated the preferred form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the invention is not necessarily limited thereto, asvarious changes in the shape, proportions, and general assemblage of the parts may be resorted to without departing from the principle of the invention or sacrificing any of its advantages.

In the drawings thus employed, Figure 1 is a perspective view of a bolt with one of the improved nuts in one of its positions thereon, and Fig. 2 is a similar view with the nut in another of its positions. Fig. 3 is a perspective view of one of the nut members detached. Fig. 4 is a plan view with one of the improved wrench members applied. Figs. 5, 6, and 7 are perspective views of various forms of wrenches capable of use upon the improved nut.

The improved nut comprises a plurality of members 10, preferably in disk or annular form, each with one complete internal screwthread and adapted for superimposed position upon the threaded end of a bolt 11, the combined thickness of the members 10 being substantially equal to an ordinary nut. The members 10 are provided with transverse notches 12 in their edges, the notches adapted for regreverse movement the wrench 13 is moved outwardly a distance equal to the thickness of the innermost nut member and the remaining nut members rotated for a further distance, and so on as many times as there are nut members, each nut member being thus further tightened to a slight degree and very firmly locking the nut members from reverse movement and placing the notches in irregular positions, as in Fig. 2.

The nut is very simple in construction, effective in action, and is as strong and durable as any nut of the ordinary construction.

The improved nut can be manufactured in all the various sizes of ordinary nuts and employed wherever the ordinary nut is capable of employment or wherever a lock-nut is required.

Having thus described the invention, what is claimed is 1. A nut comprising a plurality of superposed threaded disks having each a peripheral notch and arranged to be operated as a single nut with the notches registering and forming a longitudinal groove and independently as jam-nuts with the notches out of register.

2. A nut comprising a plurality of superposed annular threaded disks having each a 

